The link worked fine, thanks. I was able to view the video as well. It does look great. I am, however, a little curious about the provenance of the effect. I am correct about Roth selling this (same brand of beer, in fact) several years ago, and it is still on his site (though not "currently available." Here's a link:

If I remember correctly Mr Roth demonstrated, and explained the construction of, this gimmick on his "Live in Sacramento" tape. As a kicker ending to the coin in the bottle it's a very logical progression and a killer in his hands. On it's own it just doesn't make it for me.